If you aren't familiar with Cuisenaire Rods, here is a earlier post which gives a brief overview.
Following the white blocks horizontally across the design it is easy to count from 1 to 16. Following the red blocks, which are 2 cm long, skip-counting by 2's also results in a total of 16. In addition, the purple 4 cm rods, and brown 8 cm rods can be counted across the design for a total of 16.
Next, several more designs were created and used for counting.
How many white cubes are there? - answer 5
The subsequent questions were answered without counting:
How many red rods are there?
How many black rods are there?
How many purple rods are there?
3+1+3=7 and 7+7=14
3,6,9,12,13,14 - skip-counting green rods, and then white
To see other ways we have used Cuisenaire Rods, please visit our Math Page or come back next week for estimating.
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